static void Main(string[] args) { Console.Write("Greatest common divisor\nInput two numbers using a space and press enter: "); var tmp = Console.ReadLine().Split(' '); if (tmp.Length < 2) { return; } if (!Int32.TryParse(tmp[0], out int a)) { return; } if (!Int32.TryParse(tmp[1], out int b)) { return; } Console.WriteLine($"\n{String.Format(new string('=', 50))}\n" + $"Euclidean algorithm: {a}, {b} => GCD: {GCD.EuclidAlgorithm(a, b, out long time)} => WorkTime: {time}ms\n" + $"Stein's algorithm: {a}, {b} => GCD: {GCD.SteinAlgorithm(a, b, out time)} => WorkTime: {time}ms"); Console.ReadLine(); }